This one came to life and the packaging was okay. It was based on 4 cylyders and it worked. Took me another 2 ish hours 😭. I then added mounting onto the main plate and it was “done”.
It’s fat… really fat… bigger than the MK4’s because of my choice of motor, the Neo 550, spins at 11000 RPM and needs a lot of reduction.
Programming… AND TUNING!!!! and testing. No challange here really, smooth sailing
Hours: 4h
Started on rewiring, Using a SKR Pico for a stepper this time. passing encoder through a RP2350 since its a 5v sensor.
Im using a SKR pico now sooooo… I first feed the 5V encoder signal through a Pico 2 to translate it to 3.3v
Hours: 4
Very slow CADing of a redesign. Using a stepper motor now soo yay.
I’M ON A TRAIN!!!! Toronto to NYC so lets get some work done
Internet Kinda Sucks.
CADed a housing
Added mounting Holes
Forked meshtastic and did some simple mods
Hours: 4
Feed the PCB into a LLM to catch mistakes, caught a bunch of missing pull resistors
Also gave it to friends, I missed all my decoupling caps 😭
Hours: 8
Grinded out the rest of the schematic and started initial layout
Side note:
Spent way too long getting everything placed correctly, Why does Kicad suck so much
for the display I had to do weird transform stuff and a flat section for the USB C had to be done in on shape and exported, and the I had to do weird transforms because I could not align to the center of the “arc”
Hours: 5
Started choosing the ICs that will be used. I chose the GPS chip and a maganometer.
GPS: MAX-M10S-00B
Widely available and was simple enough to implement
Mag: QMC5883P
Used it in a previous project
Rediscovered how USB C works With the CC pins. Did usb stuff and voltage regulation stuff to be able to run the WIO off usb.
Initial Microcontroller research and selection. I chose the Wio-S3 for it’s use of external antennas (Less RF to deal with)
Labeled
Chud day. Worked on amt alignment for second stage, quite fast, went through 4 iteration, testing and calculating spacing ending up making the tool below
did the wireing for the amt
Switched Hex shaft in CAD to a bored out hex shaft